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August 29, 2015 13:56
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Time travel and dependencies
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| def age(with_respect_to = Time.now) | |
| ... | |
| end |
@fxn - to answer your question: I would test that the age of the user is shown in his profile page but not by asserting the exact age. I think this will be over-testing. In the collaborators' unit test you'd have set expectations that the age method is being called, and in age's unit test you'd test it does the right thing - performing the correct calculation with respect to the given parameter. In the integration test I'd maybe test that the displayed age is numeric and between 0 and 150. No need to test ``age`'s logic again. The default code for the parameter will get executed and if it was a typo or something that doesn't make sense it would get caught in the integration test.
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continuing the discussion from rails/rails#12824 (comment)